The 1976 Government in the Sunshine Act amendments to the FOIA
In 1976, as part of the Government in the Sunshine Act, Exemption 3 of the FOIA was amended so that several exemptions were specified:

• information relating to national defense,
• related solely to internal personnel rules and practices,
• related to accusing a person of a crime,
• related to information where disclosure would constitute a breach of privacy,
• related to investigatory records where the information would harm the proceedings,
• related to information which would lead to financial speculation or endanger the stability of any financial institution, and
• related to the agency's participation in legal proceedings.